JP2009220729A - Handlebar operating two-front-wheel bicycle with front basket for child - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a handlebar operating two-front-wheel bicycle with a front basket for children having excellent maneuvering performance at low cost by improving a two-front-wheel bicycle having excellent stability. <P>SOLUTION: The handlebar operating two-front-wheel bicycle with the front basket for children comprises a handlebar shaft 4 which is provided on a frame so as to be turnable, a two-front-wheel axle 10 for rotatably supporting front wheels 1, 1 at both ends, an axle coupling bush 15 which turns the two-front-wheel axle 10 in the right-to-left direction by the handlebar operation and is coupled with the handlebar shaft 4 in an oscillating manner with respect to a horizontal plane, and a front basket 19 integrated with the two-front-wheel axle 10 so as to be located in front of the handlebar shaft 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a two-wheeled bicycle before handle operation with a forehead for children.

It has been pointed out that when an infant is placed on the saddle in front of the handle of a two-wheeled bicycle, the center of gravity rises and the vehicle is likely to fall over when parked or stopped.
From this point of view, the front two-wheeled bicycle is excellent in stability, but there is a problem that needs to be solved in order to mount the forehead.

Patent Document 1 discloses an invention of a front two-wheel rear one-wheel bicycle. The present invention employs a wheel-type steering system and employs a mechanism for transmitting the rotation of the handle shaft to the rack via the pinion, which is somewhat complicated. The device of Patent Document 2 also adopts a wheel type steering system. However, the steering mechanism and the relationship between the saddle and the steering mechanism are unknown.
JP 53-8941 A Japanese Utility Model Publication No. 51-89649

A conventional handle-operated two-wheeled bicycle with a forehead for children has a high center of gravity, so that the bicycle tends to fall down due to the movement of the infant's center of gravity when the vehicle is stopped, and it is not stable during driving.
An object of the present invention is to improve a front two-wheel bicycle with excellent stability and to provide a low-priced child-operated front-wheel-operated two-wheel bicycle with excellent driving performance.

In order to solve the above-mentioned problem, the two-wheeled bicycle before handle operation for a child with a forehead according to claim 1 according to the present invention is provided.
In front two-wheeled bicycle with steering wheel operation,
A handle shaft 4 rotatably provided on the frame 3,
A front motorcycle 10 that rotatably supports the front wheels 1 and 1 at both ends;
Coupling means for pivotally coupling the front motorcycle axle 10 to the handle shaft 4 to the right and left by a handle operation and swingable with respect to a horizontal plane;
And a front rod 19 provided integrally with the front motorcycle axle 10 so as to be positioned in front of the handle shaft 4.

When the embodiment of the first aspect of the invention is the first embodiment,
A second embodiment of the two-wheel bicycle before handle operation with a forehead for children according to the present invention is the bicycle according to the first embodiment,
The connecting means connects the horizontal shaft 4A at the lower end of the handle shaft 4 to the axle connecting bush 15 at the center of the front motorcycle axle 10, thereby rotating the front motorcycle 10 to the left and right by a handle operation and with respect to a horizontal plane. It is characterized by being coupled so as to be able to swing.

A third embodiment of the two-wheel bicycle before handle operation with a forehead for children according to the present invention is the bicycle according to the first embodiment,
A spring receiving plate 11 provided integrally with the handle shaft 4 of the front motorcycle axle 10 above the front motorcycle axle 10;
The present invention is characterized in that springs 12 and 12 arranged between the front motorcycle axle 10 and the spring receiving plate 11 are provided.

A fourth embodiment of the two-wheeled bicycle before handle operation with a forehead for children according to the present invention is the bicycle according to the third embodiment,
The springs 12 and 12 are coil springs, and upper and lower ends of each spring are respectively connected to a spring receiving plate 11 and a front motorcycle axle 10.

According to the first aspect of the present invention, the center of gravity when an infant is mounted on the front can be lowered compared to the case of a conventional two-wheeled bicycle, and stable parking, stopping state and running state can be realized, Traffic safety can be achieved.
According to the present invention, the second embodiment can be implemented, and the horizontal shaft 4A at the lower end of the handle shaft 4 is coupled to the axle coupling bush 15 at the center of the front motorcycle axle 10 by coupling means. By rotating the front motorcycle axle 10 to the left and right by a handle operation and slidably coupled to a horizontal plane, it is possible to improve exercise performance.

According to the present invention, the third embodiment can be implemented, and the spring receiving plate 11 provided integrally with the handle shaft 4 of the front motorcycle axle 10 above the front motorcycle axle 10, and the front motorcycle axle 10. The springs 12, 12 disposed between the spring receiving plate 11 and the spring receiving plate 11 enable a buffering operation.
According to the present invention, implementation as in the fourth embodiment is possible. That is, the springs 12 and 12 are coil springs, and the upper and lower ends of each spring are coupled to the spring receiving plate 11 and the front two-wheel axle 10, respectively, so that the shock absorbing performance can be improved.

  The best mode for carrying out a two-wheeled bicycle before handle operation for children according to the present invention will now be described in more detail with reference to the drawings.

FIG. 3 is a plan view of an embodiment of the two-wheeled bicycle before handle operation with a forehead for children according to the present invention. FIG. 4 is a right side view of an embodiment of the two-wheel bicycle before handle operation with a front heel for children according to the present invention. In FIG. 3, the front wing is removed to show the mounting (supporting) structure of the front heel.
The frame structure of the two-wheel bicycle before handle operation with a front heel for children according to the present invention is not different from that of a conventional front one-wheel bicycle. The saddle 5 and the rear wheel 2 are coupled to the frame 3, and the rotation of the pedal 6 is transmitted to the rear wheel 2 through a known chain. A handle shaft 4 that is rotated by a handle 7 is rotatably supported by a handle bearing 3A of the frame that is a part of the frame 3.

FIG. 1 is a front view of an embodiment of a two-wheel bicycle before handle operation with a child's forehead according to the present invention, and FIG. It is a partial right side view shown with a part cut away.
As shown in FIG. 2, the handle shaft 4 is supported by the handle bearing 3 </ b> A portion of the frame 3 so as to be capable of steering rotation by a known support mechanism. A spring receiving plate support shaft 11A is attached to the handle shaft 4 parallel to the reference plane (G). Further, the lowermost horizontal shaft 4A portion of the handle shaft 4 is similarly bent forward and parallel to the reference plane (G). These parts (parts parallel to the reference surface of the spring receiving plate support shaft 11A and the lowermost 4A portion of the handle shaft 4) are rotated in a plane parallel to the reference surface as the handle shaft 4 rotates. .

At both ends of the front motorcycle axle 10, front wheels 1 and 1 are provided by a well-known bearing support or the like. An axle coupling bush 15 is welded and fixed to the center of the front motorcycle axle 10 by a reinforcing plate 16.
The front wheels 1 and 1 are connected to the frame 3 by rotatably inserting the lowermost 4A portion of the handle shaft 4 into the axle coupling bush 15.
The spring receiving plate 11 is welded and fixed at a welding position 9 to a spring receiving plate supporting shaft 11 </ b> A integral with the handle shaft 4.

A pair of coil springs 12 and 12 are inserted and fixed between the front motorcycle axle 10 and the spring support plate 11. The upper ends of the coil springs 12 and 12 are fastened and fixed with screw nuts at fixed positions indicated by 17 and 17 of the spring receiving plate 11.
The lower ends of the coil springs 12 and 12 are fastened and fixed to a coupling fitting provided at positions 18 and 18 of the front motorcycle axle 10 with a screw nut.

  In the bicycle according to the present invention, the front rod 19 is fixed to the front motorcycle axle 10 by a plurality of rod support bars 13. The heel support rods 13A and 13A are coupled and supported to the leg portion accommodating portion of the infant on the front heel 19, and the heel support rods 13B and 13B are coupled to support the seat portion of the front heel 19 from below. It has been made.

In the front two-wheeled bicycle, in a structure that does not allow the front two-wheel axle 10 to swing with respect to the frame 3, driving performance is impaired when the vehicle does not travel on the reference plane G (horizontal plane).
Further, when the direction is changed during traveling, a centrifugal force is generated. Therefore, it is necessary to incline the rear wheel with respect to the two front wheels during traveling.
According to the above-described configuration of the present invention, these problems can be solved. As shown in FIG. 1B, when the front wheel is in contact with the surface indicated by a, the rear wheel is inclined clockwise, and the right spring 12 is more compressed toward the rear wheel.
When the front wheel is in contact with the surface indicated by b, the rear wheel is tilted counterclockwise. The left spring 12 is in a more compressed state.

It is a front view of the Example of the two-wheel bicycle before the handle | steering-wheel operation for children with a front lid by this invention. FIG. 3 is a partial right side view showing a partially broken front wing portion of an embodiment of the two-wheel bicycle before handle operation with a child heel according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view (illustrated with a forehead removed) of an embodiment of a two-wheel bicycle before handle operation with a forehead for children according to the present invention. It is a right view of the Example of the two-wheeled bicycle before the handle | steering-wheel operation for children with a forehead by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front wheel 2 Rear wheel 3 Frame 3A Handle bearing of a frame 4 Handle shaft 5 Saddle 6 Pedal 7 Handle 10 Front two-wheel axle 11 Spring receiving plate 11A Spring receiving plate support shaft 12 Spring 13 籠 Support rod 15 Axle coupling bush 16 Reinforcement plate 17 Spring Upper fixed position 18 Lower spring fixed position 19 Front

In order to solve the above-mentioned problem, the two-wheeled bicycle before handle operation for a child with a forehead according to claim 1 according to the present invention is provided.
In front two-wheeled bicycle with steering wheel operation,
A handle shaft 4 rotatably provided on the frame 3,
A front motorcycle 10 that rotatably supports the front wheels 1 and 1 at both ends;
Coupling means for coupling the front two-wheeled axle 10 to the left and right by a handle operation so as to be swingable with respect to a horizontal plane, integrally with the lower end of the handle shaft 4 and forward ;
And a front rod 19 provided integrally with the front motorcycle axle 10 so as to be positioned in front of the handle shaft 4.

In order to solve the above problems, Turkey serviced before basket with handle operation prior two-wheel bicycle by the present invention is a two-wheeled bicycle front handle operation,
Rotatably provided in frame, a handle shaft having a lower end shaft which is projecting fixed forward,
Before motorcycle shaft for rotatably supporting a front wheel at each end,
An axle coupling bush provided integrally in the center of the front motorcycle axle and rotatably receiving the lower end shaft;
A spring receiving plate provided integrally with the handle shaft and above the front motorcycle axle ;
A pair of left and right springs provided between the spring receiving plate and the front motorcycle axle;
And a front wing that is provided integrally with the front motorcycle axle so as to be positioned in front of the handle shaft .

The two-wheeled bicycle before handle operation with a forehead for children according to the present invention is configured such that a horizontal shaft (lower shaft) 4A at the lower end of the handle shaft 4 is coupled to an axle coupling bush 15 at the center of the front motorcycle axle 10, thereby. Is rotated to the left and right by a handle operation , and is pivotably coupled to a horizontal plane.

A two-wheeled bicycle with a front handle for a child according to the present invention includes a spring receiving plate 11 provided integrally with the handle shaft 4 of the front two-wheel axle 10 above the front two-wheel axle 10 , and the front two-wheel axle 10 and the spring receiving plate 11. It is characterized by providing springs 12 and 12 disposed between them.

Two-wheel bicycle front basket with handle operation before a children according to the invention, the spring 12, 12 is a coil spring, characterized in that it is coupled to the front motorcycle shaft 10 and the spring bearing plate 11, respectively upper and lower ends of each spring .

According to the present invention , it is possible to lower the center of gravity when an infant is mounted on the outpost compared to the case of a conventional two-wheeled bicycle, to realize stable parking, a stopped state and a traveling state, and to improve traffic safety. Can be planned.
According to the present invention, by binding the horizontal axis at the lower end of the handle shaft 4 (bottom axis) 4A in the center of the axle coupling bush 15 before motorcycle shaft 10, rotating the front motorcycle shaft 10 to the right and left by the handle operation In addition, it is possible to improve exercise performance by coupling with a horizontal plane so as to be swingable.

According to the present invention, the spring receiving plate 11 provided integrally with the handle shaft 4 of the front motorcycle axle 10 above the front motorcycle axle 10 and the springs 12, 12 disposed between the front motorcycle axle 10 and the spring receiving plate 11. , Buffering operation is enabled.
According to the present invention, the field it 12, 12 is a coil spring, by which is coupled to front motorcycle shaft 10 and the spring bearing plate 11, respectively upper and lower ends of each spring can be improved cushioning performance.

FIG. 1 is a front view of an embodiment of a two-wheel bicycle before handle operation with a child's forehead according to the present invention, and FIG. 2 shows a front portion of an embodiment of a two-wheel bicycle before operation with a handle for a child according to the present invention. It is a partial right side view shown with a part cut away.
As shown in FIG. 2, the handle shaft 4 is supported on the handle bearing 3 </ b> A portion of the frame 3 by a well-known support mechanism so as to be capable of steering rotation. A spring receiving plate supporting shaft 11A is attached to the handle shaft 4 in parallel to the reference plane (G). Further, the lowermost horizontal axis (lower end axis) 4A portion of the handle shaft 4 is similarly bent forward and parallel to the reference plane (G). These parts (parts parallel to the reference surface of the lower end shaft 4A portion of the lower end shaft 11A of the spring receiving plate support shaft 4 and the handle shaft 4) rotate in a plane parallel to the reference surface as the handle shaft 4 rotates. Be made.

At both ends of the front motorcycle axle 10, front wheels 1 and 1 are provided by a well-known bearing support or the like. An axle coupling bush 15 is welded and fixed to the center of the front motorcycle axle 10 by a reinforcing plate 16.
The front wheels 1 and 1 are connected to the frame 3 by inserting the lowermost end shaft 4A portion of the lowermost end of the handle shaft 4 into the axle coupling bush 15 in a rotatable manner.
The spring receiving plate 11 is welded and fixed at a welding position 9 to a spring receiving plate supporting shaft 11 </ b> A integral with the handle shaft 4.

1 front wheel 2 rear wheel 3 frame 3A frame handle bearing 4 handle shaft
4A Lower end shaft 5 Saddle 6 Pedal 7 Handle 10 Front motorcycle axle 11 Spring support plate 11A Spring support plate support shaft 12 Spring 13 Rod support rod 15 Axle coupling bush 16 Reinforcement plate 17 Spring fixed position upper 18 Spring fixed position lower 19

Claims (1)

In front two-wheeled bicycle with steering wheel operation,
A handle shaft provided rotatably on the frame;
A front motorcycle axle that rotatably supports the front wheels at both ends,
A coupling means for coupling the front motorcycle axle to the handle shaft so as to rotate left and right by a handle operation and to be swingable with respect to a horizontal plane;
A front wing integrated with the front motorcycle axle so as to be positioned in front of the handle shaft;
This is a two-wheeled bicycle before handle operation with a forehead for children.

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